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Resource Reservation Protocol (RSVP) Proxy Approaches
RFC 5945

Internet Engineering Task Force (IETF)                    F. Le Faucheur
Request for Comments: 5945                                         Cisco
Category: Informational                                        J. Manner
ISSN: 2070-1721                                         Aalto University
                                                                 D. Wing
                                                                   Cisco
                                                              A. Guillou
                                                                     SFR
                                                            October 2010

         Resource Reservation Protocol (RSVP) Proxy Approaches

Abstract

   The Resource Reservation Protocol (RSVP) can be used to make end-to-
   end resource reservations in an IP network in order to guarantee the
   quality of service required by certain flows.  RSVP assumes that both
   the data sender and receiver of a given flow take part in RSVP
   signaling.  Yet, there are use cases where resource reservation is
   required, but the receiver, the sender, or both, is not RSVP-capable.
   This document presents RSVP proxy behaviors allowing RSVP routers to
   initiate or terminate RSVP signaling on behalf of a receiver or a
   sender that is not RSVP-capable.  This allows resource reservations
   to be established on a critical subset of the end-to-end path.  This
   document reviews conceptual approaches for deploying RSVP proxies and
   discusses how RSVP reservations can be synchronized with application
   requirements, despite the sender, receiver, or both not participating
   in RSVP.  This document also points out where extensions to RSVP (or
   to other protocols) may be needed for deployment of a given RSVP
   proxy approach.  However, such extensions are outside the scope of
   this document.  Finally, practical use cases for RSVP proxy are
   described.

Le Faucheur, et al.           Informational                     [Page 1]
RFC 5945                  RSVP Proxy Approaches             October 2010

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc5945.

Copyright Notice

   Copyright (c) 2010 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   include Simplified BSD License text as described in Section 4.e of
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   described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Le Faucheur, et al.           Informational                     [Page 2]
RFC 5945                  RSVP Proxy Approaches             October 2010

Table of Contents

   1. Introduction ....................................................3
   2. RSVP Proxy Behaviors ............................................6
      2.1. RSVP Receiver Proxy ........................................6
      2.2. RSVP Sender Proxy ..........................................7
   3. Terminology .....................................................7
   4. RSVP Proxy Approaches ...........................................9

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